DSST Drug and Alcohol Abuse is by most accounts one of the easiest upper-level exams. The IC flashcards are excellent for this one. Look at the exam-specific thread too, and pay attention to what you read there. I like Civil War and Reconstruction as another upper-level exam, but I am kind of a history buff, and a big Lincoln fan (we have the same birthday). The IC flashcards are very good for this one too, but you probably will want some additional study as well.

-Gary-